Trait StepArgs 

pub trait StepArgs: Serialize {
    const KIND: &'static str;
}

Arguments that say which operation they are for: what a program written in Rust — an example, a standard part, a test — pushes as a step without naming the operation again.

Required Associated Constants

const KIND: &'static str

The kind of the operation they are for (see Operation::KIND).

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors